FT150B Made In USA 3/8″ Auto Fill Float Valve – Automatic Water Level Control for Pool & Water Tank – Fits 8″ Canister – Wingnut Adjustment, 3″ Arm, 2.25 GPM, 125 PSI – Pool & Spa Autofill Valve

Stop managing your water levels manually and upgrade to an automatic system built for consistency.The FT150B Auto Fill Float Valve is a heavy-duty automatic water level control valve designed for homeowners and professionals who need accurate water regulation in in-ground pools, 8-inch autofill canisters, water tanks, spas, ponds, fountains, and livestock watering systems. It automatically opens when water drops and closes once the set level is reached—helping prevent overflow, underfill, and wasted water without requiring electricity or complex mechanisms.One of the standout advantages of this valve is its large wingnut adjustment, allowing users to set the desired water level quickly and precisely. This makes it easy to achieve consistent fill height, reducing guesswork and saving time during setup or seasonal adjustments.Designed specifically for pool autofill systems, the valve features 3/8″ NPT male threads and a 3″ arm, making it compatible with many standard 8″ canister autofill systems including MP, Super Pro, Pour-A-Lid, and Letro/Pentair installations.Built for demanding environments, the valve uses corrosion-resistant Brass combined with stainless steel components to provide long-lasting durability in wet, chemical-exposed environments commonly found in pools, spas, and outdoor water systems.The valve supports an adjustable flow rate up to 2.25 GPM, allowing controlled water replenishment while maintaining stable water levels in automatic fill systems.With an overall length of approximately 7¼ inches, the valve is specifically designed to fit standard 8″ autofill canisters, making installation straightforward for most pool autofill setups.Durable, reliable, and easy to adjust—this float valve provides dependable automatic water level control for a wide range of water management applications.

• ✅ TOTAL CONFIDENCE — MAINTAIN THE PERFECT WATER LEVEL AUTOMATICALLY: This automatic water level control float valve works continuously to stabilize water levels in pools and tanks, helping prevent overflow, underfill, and unnecessary refilling. Reliable 24/7 operation with no electricity or complicated components required.
• ✅ FAST, EASY ADJUSTMENT — LARGE WINGNUT FOR PRECISE WATER LEVEL CONTROL: Designed with a large wingnut adjustment mechanism that makes it simple to set your ideal fill height with accuracy. Get consistent water levels with minimal effort, reducing maintenance time while improving overall system performance.
• ✅ VERSATILE DESIGN — 3/8″ NPT VALVE WITH 3″ ARM FOR AUTOFILL SYSTEMS: Features 3/8″ NPT male threads with a 3″ arm, offering excellent compatibility with many 8-inch autofill canisters and common pool autofill systems including MP, Super Pro, Pour-A-Lid, and Letro/Pentair configurations.
• ✅ BUILT FOR HARSH ENVIRONMENTS — CORROSION RESISTANT CONSTRUCTION: Constructed with corrosion-resistant Brass and stainless steel components designed to withstand constant water exposure, outdoor environments, and pool chemicals for long-lasting durability.
• ✅ HIGH-PRESSURE PERFORMANCE — RATED FOR UP TO 125 PSI: Designed for reliable operation in demanding installations with a pressure rating up to 125 PSI, ensuring consistent water level control in residential and commercial pool and water management systems.